Herculaneum Post Office

1234 Commercial Blvd, Herculaneum, MO 63048

Contact Numbers

Phone: 636-937-7220
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 24 hours
Tuesday 24 hours
Wednesday 24 hours
Thursday 24 hours
Friday 24 hours
Saturday 24 hours
Sunday 24 hours

Last Collection Times

Monday 4:30pm
Tuesday 4:30pm
Wednesday 4:30pm
Thursday 4:30pm
Friday 4:30pm
Saturday 12:00pm
Sunday Closed

Bulk Mail Acceptance Hours

Monday 8:00am - 1:00pm, 2:00pm - 3:00pm
Tuesday 8:00am - 1:00pm, 2:00pm - 3:00pm
Wednesday 8:00am - 1:00pm, 2:00pm - 3:00pm
Thursday 8:00am - 1:00pm, 2:00pm - 3:00pm
Friday 8:00am - 1:00pm, 2:00pm - 3:00pm
Saturday Closed
Sunday Closed

*This facility does not process US Passports applications or renewals. Check nearby locations below.

  • Bulk Mail Acceptance
  • Bulk Mail Account Balance
  • Bulk Mail New Permit
  • Business Line
  • Duck Stamps
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Packaged Stamps
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Lot Parking

Visit our Links Page for Holiday Schedule, Change of Address, Hold Mail/Stop Delivery, PO Box rentals and fees, and Available Jobs.

*Please call to verify information. Is anything incorrect? Let us know here

Nearby Post Offices:

109 Walnut St
1.3 miles away

305 Main St
1.3 miles away

Crystal City
324 Bailey Rd
1.5 miles away

3823 State Road Z
3.7 miles away


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Just giving r mail lady codos for doing a great job, all r most r elderly.


We were told, and others in our cul de sac. That once it was full we'd get mail delivered to our houses. Not the growing bank of boxes up the hill. Still waiting. Ridiculous we can't get mail delivered. They turn around in our cul de sac!!!!


I Just wanted to give a glowing compliment to my postal lady who always delivers my mail and goes above and beyond to make sure I get my mail. I had an imporatnt letter that was missing my numbers to my address and the postal lady still delivered it to me by name and street only. I called and spoke to Rhonda and I let her know how thankful I am. I'm sure it isn't easy delivering in this providence subdivision with cars parked all over the streets and mailboxes on each side.


Also from the Providence Subdivision. Haven't received mail in almost a week. I'm signed up for informed delivery so I know I'm supposed to have mail. But nothing has shown up for days.


The fact that the mailman who delivers to Providence Subdivision will not deliver mail if a car is parked any where near a mailbox is ridiculous! I have seen my car almost get hit on several occasions because the mailman is too lazy to get out of his/her vehicle is insane- worst and laziest mailman ever.

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